B

4000(kJ)

-lập phương trình đi bạn

-lớp mấy

secretary / be / responsible / manager / serious mistakes.

A. The new secretary is responsible to the manager to the serious mistakes. 

B. The new secretary is responsible for the manager to the serious mistakes. 

C. The new secretary is responsible to the manager for the serious mistakes. 

D. The new secretary is responsible for the manager for the serious mistakes.

-tra mạng

-ổ bi làm giảm hoặc tăng ma sát

-tick hộ mk vs

-bài này áp dụng ct Qtỏa = Qthu

-gương